Patents by Inventor Shiyuuichirou Iwatsuki

Shiyuuichirou Iwatsuki has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Vehicle body frame structure
    Patent number: 6022070
    Abstract: A vehicle body frame structure is comprised of plurality of loop-shaped members each formed by a hollow pieces extruded from a light alloy. Each loop-shaped member is polygonal in cross section. The vehicle body frame structure is partly formed by a plurality of such loop-shaped members joined sidewise together. Each loop-shaped member is comprised of at least two hollow extruded pieces joined together by a core coupling or a split muff coupling. Part of each loop-shaped member is stepped so that it can be joined with a companion loop-shaped member by mating the stepped portions of the two loop-shaped members one over the other.
    Type: Grant
    Filed: September 27, 1996
    Date of Patent: February 8, 2000
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Toshiro Ashina, Takashi Chirifu, Akihiro Sukegawa, Sakae Sasaki, Shiyuuichirou Iwatsuki, Takatoshi Miyabe